Floor polisher



Feb. 21,, 1950 L. GOLDENBERG 2,498,205

FLOOR POLISHER Filed Jan. so, 1945 2 Shets-Sheet 1 awe/rm i 6072 uide 2'67;

Feb. 21; 1950 GQLDENBERG 2,498,205

FLOOR POLISHER Filed Jan. 30, 1945 2 Sheets-Sheet 2 zzd ZZZ? 5 [2072 Golden 2'6 79 Patented Feb. 21, 1950 pr nce FLOOR Ponrsrma Leon Goldenberg, Shreve mra,La. ApplicationJanuary 30, 1945, Serial No. 575,258" g This invention relates to floor polishers or buffers of the revolving type and is embodied in a machine which may be manufactured at low cost and easily serviced.

One of the important aims of this invention is the provision of a machine that may be wheeled by the operator with care over a floor to be polished or otherwise treated and the roller of which will engage the floor when a slight upward force on the handle held by the operator is applied by the latter.

Another object of the invention is the provision of means whereby the carpet covering of the polishing roller may be easily attached thereto or detached therefrom.

Other objects of the invention will appear during the course of the following specification referring to the accompanying drawings, wherein:

In the drawings:

Figure 1 is a side elevation of my polishers;

Figure 2 is a plan view;

Figure 3 is a vertical and central section on line 3-3 of Figure 2;

Figure 4 is an axial detail section of the entire roller on line 4-4 of Figure 3;

Figure 5 is an enlarged detail section through the end of roller, the adjacent supporting frame portion, and the adaptor roller connected to the floor polisher;

Figure 6 is a transverse detail section through the fragment of the roller containing the slot in which the roller covering is held.

The frame F of the buffer comprises parallel bars 2, preferably of metal, which at their approximate midpoints are curved upward 3 and bent inwardly at the their rear or handle end portions 4. The extreme end portions 5 of these handle parts are bent into parallelism and spaced to the extent of the width of the handle H, which is secured between them by bolts or otherwise. Through the junction of the straight and curved portions of the bars 2 passes the floor wheel axle 1 carrying rubber tired floor wheels 8 upon its portions protruding beyond the frame. The two frame portions 2 in the plane of which the handle lies, are connected by two parallel rods 9, which brace the frame and support the electric motor M by means of two plates ID, II that are oppositely grooved for the reception of the rods and bolted together. These bolts also hold the motor base E2 to the entire assembly.

'Ijhe motor which may be controlled by a switch "(not-shown) located at the upper freeend of the handle, has an outwardly extending shaft l3 upon the outer end of which is secured 2.

2 claims. (01. 1598 pulley M. A. belt is and alsoiorer a pulley |-6 which has a hub portion rained over the latter I! with a radial hole for a set, screw 18.- bearing with itsinrxerv endagainst an axle IS. The latter is threaded upon both end portions. The inner end portion of axle I9 is threaded into a block 20 held in a concentric recess in one end of roller 2|. The other outer end of axle I9 is threaded into a bearing sleeve 22 which is pressed into the inner race 23. This race rotates on balls rolling on an outer bearing race 24 which is pressed into a hole formed in the forward ends of the curved bars portions 3. An auxiliary roller 25 has a concentric recess in one side for a block 26 into which an adaptor shaft 21 is threaded the other threaded end of which may be screwed into the unoccupied portion of the sleeve 22. This gives the user a removable auxiliary roller for polishing a strip of floor outside the frame and along the wall. The journal structure of the right (viewed from the operator) hand end of the roller '2! is a duplicate of that on the left hand roller end with the exception that the former lacks a pulley for the belt I5.

The main roller 2| is provided on its periphery with a longitudinal slot 28 in which the end portions of a peripheral covering 29 of carpet or other suitable material are placed above one another. Astrip 30 of wood or other material and of a length coextensive with the length of the roller 2| and of a width somewhat less than the middle of the slot 28 is placed above the end portions. of the covering 29 and held in such position by screws 3|. The auxiliary roller 25 has a covering and means for fastening the same similar to that of the main roller 21 Since the weight moment of the motor just about balances that of the roller while the handle is held by a person of average height, a slight upward pressure on the handle will result in a suhstantialincrease of the pressure of the roller upon the floor.

While I have described a particular structure and illustrated the same in the accompanying a inotor, means adjustably supporting said motor REFERENCES CITED on said'rods, a roller, n'ie axis of said roller and said motor being approximately equi-distant i gg gg fg are of record in the from the axis of said supporting wheels, axle pins:

carried :by said roller concentric thereto at each UN STA ES PATENTS end thereof, bearings carried by said side arms Number Name Date at the free end thereof, said pins engaging in 869,817 Wade a 29 1907 said bearings rotatably supporting said roller on 937 353 Ackerman Oct 1909 said fork, a pulley onmone of said pins, and a 960:879 Friedman June 1910 flexible member trained about said pulley opera- 10 1,162,098 Paszkiewicz Nov. 1915 tively connecting saidroller with said motor, the 1,334 240 Gray Man 1920 weight of said motor substantially counterbalanc- 13911039 Beach Sept. 1921 ing said roller about said, supporting Wheels, said 1,642,440 Hoe et a1 Sept. 1927 arms being upwardly bowed between said wheels 1,820,482 Orth 1931 andjsaid roller, wheretifyupward movement or said 15 1,846,507 Boring 1932 handle about the wheel axiswill shorten the 2,011,214 Erickson Aug 1935 "moment arm of said Jmotor.and increase the 2,237,999 Newman s 1941 I .rnoment arm of said roller for applying the weight 2,247,970 smith July 1941 of said roller on a su'fiace to be polished. 2,237,923 White June 1942 2. A floor polisher asf=set forth in claim 1, in- 20 2,302,312 stempel Nov 1942 clnding a sheet of surfacing material encircling said roller and means removably securing said '-'sheet on said roller.

LEON GOLDENBERG. 

